| Ni3Al（Zr）合金的高温环境脆性 | |
| Alternative Title | Environmental Embrittlement of Ni3Al（Zr） Alloy at High Temperatures |
| 李玉芳; 郭建亭 | |
| 2008 | |
| Source Publication | 南京航空航天大学学报
 |
| ISSN | 1005-2615 |
| Volume | 40.0Issue:003Pages:380-384 |
| Abstract | Ni3Al（Zr）合金在700-1050℃之间存在低塑性区，无论在空气还是在真空中，都表现出脆性的沿晶断裂，塑性很低。在拉伸过程中形成的致密氧化铝薄膜能够有效地阻止氧向基体中扩散，减少环境脆性，提高合金的高温塑性。活性元素Zr能够与氧原子相互作用，减少裂纹沿晶界扩展，改善合金的高温塑性。 |
| Other Abstract | The tensile ductility of the Ni3Al（Zr） alloy is sensitive to temperature and exists low ductility from 700 to 1050℃ both in air and 10^-3 Pa vacuum. The fracture mode becomes intergrangular. The formation of oxide layer during tensile process at elevated temperature in air suppresses environmental embrittlement for the alloy. It is found that Al-rich oxide film is more effective in protecting the underlying alloy from oxygen penetration. Zr element presented in appropriate quantity can increase the ductility at intermediate temperature by their interaction with diffusing oxygen atoms. |
| Keyword | Ni3Al（Zr） 力学性能 断裂 环境脆性 |
| Indexed By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:3322381 |
| Citation statistics |
Cited Times:1[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/153750 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | 李玉芳,郭建亭. Ni3Al（Zr）合金的高温环境脆性[J]. 南京航空航天大学学报,2008,40.0(003):380-384. |
| APA | 李玉芳,&郭建亭.(2008).Ni3Al（Zr）合金的高温环境脆性.南京航空航天大学学报,40.0(003),380-384. |
| MLA | 李玉芳,et al."Ni3Al（Zr）合金的高温环境脆性".南京航空航天大学学报 40.0.003(2008):380-384. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment